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Patent US2856284A successfully refreshed from Google Patents.
US2856284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photomagnetic printing process
Assignee: Eastman Kodak Co
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Filing: 1955-01-07
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Granted: 1958-10-14
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Expires: 1975-01-07
Abstract
No abstract record available.
Inventors
- 👤 Franklin A Hamm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:20
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/0047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON A LAYER COMPRISING AN ESTER OF POLYVINYL ALCOHOL CONTAINING AT LEAST 60 MOL. PERCENT OF RECURRING STRUCTURAL UNITS HAVING THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
30 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON A LAYER COMPRISING AN ESTER OF POLYVINYL ALCOHOL CONTAINING AT LEAST 60 MOL. PERCENT OF RECURRING STRUCTURAL UNITS HAVING THE FOLLOWING FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |